Of course, there are many things Avery says that only we understand. There are just as many things it seems that we haven't figure out yet.
Here is one of the more recent ones that we managed to translate:
"suck" -> at first I thought it was another variation of sock but it never happened in situations that made sense. We've discovered that it tends to actually be "I suck" meaning "I'm/it's stuck".
Here's one that we can't nail down, it sounds like she's saying "dumb". I'm at a complete loss.
Other things I hear a lot:
"I do I do I do I do" spoken with urgency.